This is a fully assembled ready to fly 300mm tricopter drone with APM flight controller. This drone is awesome and is fully autonomous including mission planning with waypoints. This is a very stable and easy to fly drone. Some functions include 6 programmed flight modes including RTL(return home) and Alt Hold. If you add a bluetooth or 3dr radio, this drone is capable of follow me mode. With this setup you will get 22 minutes of flight time. Everything is already configured for you and it is basically ready to fly out of the box. Like always free shipping to USA customers.